66425480747 has 4 divisors (see below), whose sum is σ = 67838788896. Its totient is φ = 65012172600.

The previous prime is 66425480741. The next prime is 66425480749. The reversal of 66425480747 is 74708452466.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66425480747 - 2⁶ = 66425480683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66425480741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 706654004 + ... + 706654097.

It is an arithmetic number, because the mean of its divisors is an integer number (16959697224).

Almost surely, 2^66425480747 is an apocalyptic number.

66425480747 is a deficient number, since it is larger than the sum of its proper divisors (1413308149).

66425480747 is a wasteful number, since it uses less digits than its factorization.

66425480747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413308148.

The product of its (nonzero) digits is 9031680, while the sum is 53.

The spelling of 66425480747 in words is "sixty-six billion, four hundred twenty-five million, four hundred eighty thousand, seven hundred forty-seven".